Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3264: open config file
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-11-02 08:56:39
#3264: open config file
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Reporter: Diederick C. Niehorster <dcnieho@â¦> | Owner: vladimir_prus
Type: Feature Requests | Status: new
Milestone: Boost 1.40.0 | Component: program_options
Version: Boost 1.39.0 | Severity: Optimization
Keywords: |
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Changes (by s.ochsenknecht@â¦):
* cc: s.ochsenknecht@⦠(added)
Comment:
I see one problem here. How to determine if a ifstream or a wifstream
should be used? Both take (const char*) as type for the file name.
One Solution could be:
We can implement a template with a basic_string<char> and
basic_string<wchar_t> instantiation for the file name. So, if the file
name comes with a basic_string<wchar_t> then we use wifstream, the file
name has to be converted to (const char* ).
{{{
template<charT>
parse_config_file(const std::basic_string<charT>&, ...);
}}}
Another solution could be:
The function takes const char* parameter for file name which is directly
passed to ifstream/wifstream:
{{{
template<charT>
parse_config_file(const char*, ...);
}}}
But how the user can choose now between ifstream and wifstream?
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/3264#comment:2> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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